1st-7th…Scattered storms moved into the Midwest on Monday, as a low pressure system pushed a warm front into the region. Flow around the system pulled moisture in from the Gulf of Mexico, and allowed for scattered showers and thunderstorms to stretch from the Central and Northern Plains into the Midwest. Some of these storms turned severe with strong winds and heavy rainfall. Many areas in the Dakotas saw around an inch of rain, while parts of Michigan, Iowa, and Wisconsin also saw rainfall totals near an inch. Early Monday morning, severe storms swept through Norfolk, Nebraska and brought 3.22 inches of rain, 1.98 inches of that fell in 1 hour. Due to these slow moving and repetitive storms, floods remain a concern in the Upper and Mid-Mississippi River Valley. Highs remained in the 80s across most of the North-Central U.S. Some storms also developed in the Northeast as the eastern edge of the front stretched into the region from the Midwest. This brought overcast skies with light sprinkles, but northern New York state saw some thunderstorms with quarter size hail reported in Beekmantown. However to the South, hot and humid conditions persisted as high pressure dominated the Gulf and Southeastern states. Heat advisories remain in effect as highs reached well above 100 degrees, with high humidity this created heat indicies above 110 degrees. These conditions are favorable for afternoon storm development, thus, scattered storms popped up over Georgia, Alabama, and the panhandle of Florida. In the Southwest, high-level monsoonal moisture lingered over the four corners and triggered scattered storms. Most areas saw less than a half of an inch, as dry surface conditions allowed for rain to evaporate before it reached the surface. Cortez, Colorado saw a mid-day total of 0.42 inches of rain.
Active weather developed across portions of the Midwest on Wednesday as a nearly stationary front reached across the Central Great Basin through the Central Plains and into the Ohio Valley and the Upper Great Lakes. Clusters of showers and thunderstorms developed near the boundary through the afternoon. Waves of low pressure along the boundary supported chances of severe thunderstorms from the Mid-Mississippi Valley through the Ohio Valley. Damaging winds gusts up to 66 mph were reported in northeastern Illinois, southeastern Michigan, Indiana, and Ohio. Incidents of quarter to golf ball sized hail (1.00 to 1.75 inches in diameter) were also reported in central Ohio. To the south, excessively hot weather conditions persisted from the eastern Southern Plains through the Eastern Valleys and across the Southeast as high pressure remained locked over the deep South. Heat Advisories and Excessive Heat Warnings remained over these regions as scorching daytime temperatures pushed past the century mark and heat index values reached well into the 120s. Along with these baking hot conditions, areas of scattered showers, locally heavy rainfall, and thunderstorms developed across the Southeast. In the West, a low pressure trough triggered scattered showers and thunderstorms throughout portions of the Central Great Basin as it trekked northeastward from northern Utah toward Wyoming.
Scattered storms persisted in the Southeast on Friday, while mild and pleasant weather returned to the Great Lakes. As high pressure built over the Eastern half of the country, a stationary front pushed into the Southeast, and stretched from the Mid-Atlantic states and into the Southeast and Southern Plains. This front pulled in ample moisture from the Gulf of Mexico and allowed for thunderstorms to develop. Some of these storms turned severe with strong winds, and heavy downpours. Wind gusts at 64 mph were reported in Seaside, North Carolina, while 1.76 inches fell in Whiteville, North Caroline. Most areas along the front saw between a half and an inch of rain. This gave little relief from the extremely hot and humid conditions that the region has experienced over the week. However, heat indicies still reached above 100 degrees in some areas. To the north, higher pressure allowed for a few patchy clouds and mild temperatures in the 80s over the Midwest and Great Lakes regions. In the west, mild storms popped up across the Southwest as monsoon moisture lingered over the Four Corners. The Northern Rockies also saw some scattered showers due to a trough of low pressure to the west pushing mild moisture in from the Pacific Ocean. The rest of the West Coast remained sunny and warm with some low clouds lingering along the coasts.
8th-14th…Cloudy skies covered the much of the north-central Gulf of Mexico on Wednesday as the very broad and elongated Tropical Depression Five became centered at about 150 nautical miles southeast of the mouth of the Mississippi River. The depression continued to move northwestward toward southeastern Louisiana with maximum sustained winds of 25 knots and gusts to 35 knots. Bands of showers and thunderstorms developed around the periphery of the depression but remained limited in the center. Outer rain bands affected the eastern and north-central Gulf through the afternoon. Meanwhile, to the north, a frontal boundary reached across the Ohio Valley and the northern Mid-Atlantic with showers, thunderstorms and strong winds. The boundary also separated the hot and humid air of the South from the relatively cooler Canadian airmass in the north. Oppressive heat continued to plague the central and southern states of the nation with daytime highs reaching past the century mark and heat indices soaring into the lower 120s. Poteau, Oklahoma experienced the worst of these conditions with a dangerously high heat index of 121 degrees. These baking hot conditions kept the region under numerous Heat Advisories and Excessive Heat Warnings through the afternoon. In the West, a fairly strong boundary moved from the Pacific Northwest into parts of the Intermountain West and the Northern High Plains with chances of showers and thunderstorms. Meanwhile, monsoon moisture sparked isolated showers and thunderstorms in the Southwest, while low clouds and fog lined areas of the West Coast.
Scattered storms swept through the Northern Plains and Upper Midwest on Friday, while rain persisted in the Southeast. A low pressure system skirted along the Canadian border which created a cold front that stretched southward into the Northern US. The system has kicked up scattered showers and thunderstorms, some of which turned severe with heavy rain and strong winds. Heaviest rainfall hit Minnesota with 2.76 inches reported in Glencoe, while Minneapolis saw 2.59 inches of rain. Strong winds blew down multiple trees in Tomah and Wilton, Wisconsin, with gusts up to 69 mph. To the south, the remnants of Tropical Depression Five lingered over the northern Gulf of Mexico and continued pushing ample moisture onshore over the Gulf states. This allowed for rain and thunderstorms to persist from Louisiana to the panhandle of Florida. Storm totals since Wednesday range between 3-5 inches. On Friday, Hammond, Louisiana saw a mid-day total of 2.05 inches. Elsewhere in the East, a ridge of high pressure built over the Mississippi River Valley and extended to the East Coast. This allowed for another day of sunny skies and hot temperatures. Heat Advisories remained in effect as highs remained near 100 with near 100% humidity, thus heat indicies reached well above 110 degrees. Meanwhile, the West Coast saw the beginning of a warming trend as a trough of low pressure moved off to the east and a ridge of high pressure built in from the west. Morning coastal clouds quickly pushed offshore and allowed for plenty of sunshine to stretch from the Pacific Northwest to southern California.
15th-21st…A front stalled over the Eastern U.S. on Monday, while another system moved into the Central Plains. A ridge of high pressure built over the Eastern U.S. and shoved a cold front into the Southeast. The system stretched from the Northeast, down New England and the Mid-Atlantic States, and into the Tennessee and Lower Mississippi River Valleys. In addition, the remnants of Tropical Storm Five hovered over the northern Gulf of Mexico and continued pushing ample moisture onshore. Thus, extremely warm and humid air was trapped over the Southeast and Gulf states, which allowed for scattered showers and thunderstorms to develop. Highs remained in the 90s across the region with heat index of 118 degrees in Farmville, Virginia. To the North, the front kicked up some severe storms with hail reported in Canaan Center, New York and multiple trees and power lines reported down across the state of New York. Meanwhile in the Central U.S., another system strengthened as it moved off the Rockies and into the Plains. The system kicked up scattered showers over the Four Corners as well as the Central Rockies, while it also pushed a front into the Plains. In Silver City, New Mexico, 0.94 inches of rain was reported, while wind gusts associated with a thunderstorm reached up to 70 mph in Stuart, Nebraska. Parts of northern Texas saw periods of heavy rain and strong storms, with rainfall totals ranging between a half inch to an one inch of rain. These storms brought flooding concerns to the Southwest and Central Plains. The rest of the West Coast saw hot and dry weather as a ridge of high pressure built over the region. Heat and fire warnings have been issued due to dry and windy surface conditions that allow for rapid fire spread.
A frontal boundary associated with a low pressure system centered over Hudson Bay, Canada became stalled across the northern tier of the Midwest. The disturbance sparked areas of scattered showers and thunderstorms in the Dakotas, northern Minnesota, northern Wisconsin, and the western portions of the Michigan Upper Peninsula. Increased instability along the front lead to chances of severe weather activity with hail and possible tornadoes from the Northern Plains through the Upper Great Lakes. Thus far, quarter sized hail (1.00 inch in diameter) was reported in Wilkin County, Minnesota. Temperatures across the region remained comfortably warm through the afternoon with highs in 70s to 80s.
Meanwhile, more active weather developed in the southeastern quadrant of the nation as another frontal boundary extended from the Mid-Atlantic through the Southern Plains. Ample moisture from the Gulf of Mexico heightened instability along the front and aided in producing scattered showers, locally heavy rainfall, and thunderstorms through the afternoon. Prolonged periods of rainfall created chances of flooding and flash flooding from southeastern Louisiana northeastward through the western areas of Virginia and North Carolina. Hot and humid conditions remained over areas from the Southern Plains through the Southeast and the southern Mid-Atlantic with temperatures in the 90s and lower 100s. Hilton Head Island, South Carolina experienced the worst of these conditions with a heat index of 121 degrees. Calmer and drier weather conditions developed throughout much of the West.
A warm swept through the Midwest, which kicked up severe weather on Friday. The system developed from a low pressure system that moved off the Rockies and into the Northern Plains and Upper Midwest. Flow around the system pulled in warm and moist air from the South, which created a front that triggered showers and thunderstorms over Minnesota, Iowa, and Illinois. Most areas saw 1-2 inches of rain, while hail was reported in Mercer and Kennan, Wisconsin. Strong winds developed south of this system, with signs blown down in St. Clair, Missouri and wind gusts up to 70 mph in Smithville, Missouri. Northern Minnesota saw the heaviest rainfall with 2.13 inches reported in Bemidji. Behind this front saw more mild temperatures with highs in the 70s across the Northern Plains, but the Southern Plains saw highs near 100 with heat indices well into the 100s. Poteau, Oklahoma saw a heat index up to 117 degrees. Thus, uncomfortably humid conditions persisted across the Southern Plains.
Meanwhile, in the East, a ridge of high pressure dominated the North, while a front lingered over the Southeast. The front continued to kick up scattered showers, none of which have turned severe, with rainfall totals ranging from 0.5 to 0.75 inches. New England and the Northeast saw mostly sunny skies and pleasant conditions with highs in the 80s.
Out West also saw some mild weather on Friday. A trough of low pressure pushed a few low clouds onshore, allowing for a cool and cloudy day along the coast. However, inland areas remained hot and sunny.
22nd-28th…Areas near the East Coast continued to experience wet and gloomy weather on Wednesday as a low pressure trough passed through the eastern third of the nation. In the Northeast, wrap-around flow associated with an offshore low pressure system that passed east of Cape Cod, fueled isolated to scattered rain showers across eastern New York and much of New England. Meanwhile, an associated frontal boundary located off the East Coast produced additional scattered showers over portions of the Mid-Atlantic and the Central Appalachians. To the south, the tail of the aforementioned front supported scattered showers and thunderstorms from the Carolinas through Florida as the disturbance stalled over southern Georgia, the Florida Panhandle, and the northern Gulf of Mexico by the afternoon. Numerous thunderstorms and persistent rains over the western Florida Peninsula translated into chances of minor flooding and coastal flooding. Behind the active weather near the East Coast, a cold front triggered morning showers over portions of the Upper Great Lakes before it became positioned from the Lower Great Lakes through the Tennessee Valley by the afternoon. In the Central U.S., high pressure brought fair skies and pleasant temperatures to much of the Plains. To the east of this high, areas from the Great Lakes through western Texas experienced below average temperatures. In the West, dry and hot conditions continue over much of the region as a strong ridge of high pressure located over the region edged eastward. Portions of the Northwest, parts of the Sierras, and parts of the southwestern deserts remained under Red Flag Warnings due to possible fire weather activity. Elsewhere, monsoon moisture triggered showers over eastern Arizona and portions of New Mexico and Colorado.
Scattered showers and thunderstorms persisted across the Southeast, as a front lingered on Friday. A stationary front extended off the coast of the Mid-Atlantic states and stretched into the northern Gulf of Mexico. This system has hovered over the region for the past few days, thus, flooding problems threatened many areas. Rainfall totals along the front ranged from a half of an inch to nearly 2 inches. Biloxi, Mississippi saw 2.26 inches of rain associated, while Pensacola, Florida saw 1.68 inches of rain. These storms have not yet turned severe because large hail and strong winds have not been reported. Most areas along this front remained hot and humid with highs in the 90s and heat indicies well over 100 degrees. Elsewhere across the Eastern half of the country, a ridge of high pressure extended from the Plains, over the Mississippi River Valley, and into New England and the Northeast. This brought warm and pleasant conditions to the Midwest, Great Lakes, and Northeastern US, while the Southern and Central Plains remained uncomfortably hot. The North saw sunny skies with highs in the 70s and 80s, but the South reached into the 90s. Air quality remained poor over the urban areas of eastern Texas because high pressure acts to trap pollutants near the surface. Favorable fire weather conditions moved from the Northern Rockies to the Northern Plains. These areas were placed under Fire Weather Advisories due to highs reaching into the 90s, dry surface conditions, and winds gusts up to 30 mph. Further West, a trough of low pressure pushed some moisture over the West Coast. This brought a few patchy clouds to the Pacific Northwest, as well as low clouds and fog to the coastal areas of California.
Jim G. Munley, jr.
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